Welcome to my life, hewillneverhavbeagirlfriend.com!
How it works: You take a celeb/person/character/whatever that used to be ugly, nerdy, etc, say they'd never have a significant other, then show them now. Plug those pics into this template:
Some are simple, might make you chuckle, but aren't hysterical. Then there are these:
And with THAT bit of hilarious inappropriateness, I shall tell you to just check it out for yourself. If I had any good ideas for this [besides my coworker/boss Frito who is using his 4th grade pic as his profile right now], I'd totally make one.